<template>
  <el-container class="home-container">
    <!-- 头部区域 -->
    <el-header>
     <div>
        <img src="../assets/heima.png" alt="">
      <span>电商后台管理系统</span>
     </div>
      <el-button type="info" @click="lagout">退出</el-button></el-header>
    <!-- 页面主体区 -->
      <el-container>
        <!-- 侧边栏 -->
        <el-aside :width="isCollapse ? '64px' : '200px'">
          <div class="toggle-button" @click="toggleCollapse" >|||</div>
              <el-menu
                 background-color="#333744"
                text-color="#fff"
                active-text-color="#409BEF"
                unique-opened
                :collapse="isCollapse"
                :collapse-transition="false" router
                :default-active="activePath">
                              <!-- 一级菜单 -->      
                <el-submenu :index="item.id + ' '" v-for="item in menulist" :key="item.id" >
                  <template slot="title">
                    <!-- 图标 -->
                    <i class="iconsObj[item.id]"></i>

                    <span>{{item.authName}}</span>
                  </template>
                 
                  <!-- 二级菜单 -->
                  <el-menu-item :index="'/'+subItem.path" v-for="subItem in item.children" 
                  :key="subItem.id"  @click="saveNavState('/'+subItem.path)">
                    <template slot="title">
                    <!-- 图标 -->
                    <i class="el-icon-menu"></i>
                    
                    <span>{{subItem.authName}}</span>
                  </template>

                  </el-menu-item>
                </el-submenu>
               
              </el-menu>

        </el-aside>
        <!-- 右侧边栏 -->
      <el-main>
        <!-- 路由占位符 -->
        <router-view></router-view>
      </el-main>
    </el-container>
</el-container>
</template>

<script>
export default {
  data (){
    return {
      //左侧菜单栏
      menulist: [],
      iconsObj:{
        // '125':'iconfont icon-users',
        '125':'el-icon-user-solid',
        // '103':'iconfont icon-tijikongjian',
        '103':' el-icon-menu',
       
        '101':'iconfont icon-shangpin',
        '102':'iconfont icon-danju',
        '145':'iconfont icon-baobiao'
      },

      // 是否折叠
      isCollapse:false,
      //被激活的连接地址
      activePath:''
    }
  },
  created(){
    this.getMenuList()
    this.activePath = window.sessionStorage.getItem('activePath')
  },
  methods: {
    lagout() {
      window.sessionStorage.clear();
      this.$router.push("/login");
    },
     async getMenuList(){
      const {data:res} = await this.$http.get('menus')
      if(res.meta.status !== 200) return this.$message.error(res.meta.msg)
      this.menulist =res.data
      console.log(res);
      
    },
    // 点击菜单，实现折叠效果
    toggleCollapse(){
      this.isCollapse=!this.isCollapse
    },
    //保存连接的激活状态
    saveNavState(activePath){
      window.sessionStorage.setItem('activePath',activePath)
      this.activePath=activePath
    }
  }
};
</script>

<style lang="less" scoped>
 .home-container {
   height: 100%;
 }
 .el-header{
    display: flex;
    justify-content: space-between;
    padding-left: 0;
    align-items: center;
    color: #fff;
    font-size: 20px;
    > div {
      display: flex;
      align-items: center;
        span {
            margin-left: 15px;
        }

    }
 }
.el-container {
  background-color: #373d41;
 
}
.el-menu {
  border-right:none;
}
.el-aside {
  background-color: #333744;
}
.el-main {
  background-color: #eaedf1;
}
.toggle-button{
  background-color: #4A5064;
  font-size: 10px;
  line-height: 24px;
  color: #fff;
  text-align: center;
  letter-spacing: 0.2em;
  cursor: pointer;

}
</style>